If you're like me and have one of their kits, you'll be happy to know that Sean Liming of SJJ Micro just released a Micro .Net 2.5 update for the EDK and EDK Plus kits. I've already got mine installed and am enjoying the 2.5 features I've been itching to try (notably the Web Services on Devices capabilities and the native TCP/IP stack!)
You can find the update at http://www.sjjmicro.com/EDK.html - there's a very good document on how to update the TinyCLR on your device. I was very happy to see how easy it was to do the update, and had no trouble whatsoever. You'll also find some updated documentation on using the framework with your hardware.